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发明名称
Semi-permanent memory
摘要
申请公布号
US3245058(A)
申请公布日期
1966.04.05
申请号
US19610159589
申请日期
1961.12.15
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
BRUCE GEORGE D.
分类号
G11C15/02;G11C17/02
主分类号
G11C15/02
代理机构
代理人
主权项
地址
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